I have the same problem than some others with a fresh new (for me) Arduino UNO3 + Arduino Wifi Shield delivered this morning.
-> a non ending list of “Connecting to arduino.mydevices.com:8442” messages

I’ve try to find some answers in this forum but nothing seems to work…

try a telnet from my desktop (mac osx) with the site : OK -> No problem with DNS or closing ports in the router

As previously said, I’ve just bought the components this week, and download the librarys today as explained in the starting process. I havn’t check the version of the WiFiShield internal code, but I can’t believe the shield is older than 3 years old. (Seems to be a serious French Arduino dealer)

I think it could be a good to try to connect it with the USB Serial script (just as a test) to eliminate the shield/wifi from the equation for a moment. That would verify that from your network there is no issue connecting to our Arduino server (so long as the Mac itself is on the same Wifi as you are trying with the Wifi Shield script)

I’ve seen socat’s notifications in the terminal with “successfully connected…” and “starting data transfert loop…”

The Cayenne dashboard appear in Firefox.

I’ve recieved a notification email from MyDevices.com to confirm the installation of my Arduino.

But,
I have only one access to the internet (the box delivrered by the provider, that I call “Router”) at home :
The Mac is only connected by ethernet, and my other devices by WiFi on this router !

Could this make a difference ?
Could some ports (like : 8442) be available for the Mac by ethernet and NOT for the Wifi shield by wifi ?

In fact, making a successfull ping between the Mac and the Wifi shield, is just testing the wifi connection on the local network. That don’t necessary mean that the wifi device could reach the WAN on the 8442 port.

Those ISP delivered routers are terrible. What you should do is get your own router that you can control and have as many devices as you want behind it. Plug your PC into thar and have your own wifi, disabling or just ignoring your ISP wifi.